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Finding the Fourth Proportional to 1,093.65, 1,509.36 and 651.80

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Solution

The fourth proportional to 1,093.65, 1,509.36 and 651.80 is: 899.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093.65 : 1,509.36 = 651.80 : x
  2. Step 2: Convert to fraction form
    1,093.65/1,509.36 = 651.80/x
  3. Step 3: Cross multiply
    1,093.65x = 1,509.36 × 651.80
  4. Step 4: Simplify right side
    1,093.65x = 983,793.30
  5. Step 5: Solve for x
    x = 983,793.30/1,093.65
  6. Step 6: Final answer
    x = 899.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.